header.top{
	margin-bottom: 26px;
	background: #475564;
}
.top .back-button{
	float: left;
	width: 10%;
	height: 100%;
}
.top .back-button .back-icon{
	display: block;
	width: 10px;
	height: 16px;
	margin-top: 14px;
	background: url(../img/back_white@2x.png) no-repeat;
	background-size: 100%;
}
.top .title{
	float: left;
	width: 80%;
    font-size: 16px;
    text-align: center;
}

section.main{
	padding:0 15px 20px;
}
.main h2{
	text-align: center;
}

.sign{
	overflow: hidden;
}
.sign .side{
	display: block;
	float: left;
	width: 50%;
	height: 100%;
}